Size Charts & Fit Guides - Chaps Find your fit. Measuring for Best Fit Measurements are in inches. When measuring, keep tape snug but not tight. Waist: Measure around your natural waistline, or the smallest part of your torso. Seat/Hips: Measure around the fullest part of your seat. Inseam: Using pants that fit well, lay flat and smooth out. Measure from the front crotch point, along seam, to the bottom of the hem.  Chaps Sizing Chap Inseam LengthChap Leg Width Regular30″ – 32″Long33″ – 34″Extra Long35″ – 36″StandardWide820103 Plane Calf Wrap Chainsaw Chap•• • 820104 RAC Apron Chainsaw Chaps•• • 820105 RAC Calf Wrap Chainsaw Chaps•••••